Genetic structure of Octopus mimus Gould, 1852 along three biogeographic marine provinces
- PDF / 991,754 Bytes
- 9 Pages / 595.276 x 790.866 pts Page_size
- 55 Downloads / 130 Views
ORIGINAL PAPER
Genetic structure of Octopus mimus Gould, 1852 along three biogeographic marine provinces Ricardo Pliego-Cardenas 1 & Scarlett M. Prieto 2 & Marco A. Apon 2 & Unai Markaida 3,4 & Irene De Los Angeles Barriga-Sosa 2 Received: 15 June 2019 / Revised: 17 April 2020 / Accepted: 23 April 2020 # Senckenberg Gesellschaft für Naturforschung 2020
Abstract The population genetic structure of a species is frequently shaped by biogeographic barriers that prevent the movement of individuals from one genetic population to another. Although Octopus mimus Gould, 1852 was reported to inhabit the shallow marine waters of the Peruvian province, recent studies suggest its synonymy with O. hubbsorum Berry, 1953 from the Panamanian and the Cortez provinces where it is the main octopus species caught in the artisanal fishery. The aim of the present study was to assess the genetic variability of O. mimus and to determine the presence of population structure across three sampled regions of the eastern Pacific Ocean using the mitochondrial marker cytochrome c oxidase subunit I. The hypothesis that the biogeographic boundary between the Panamanian and Peruvian provinces acts as a genetic break was further tested and recognized by the conformation of two phylogenetic clades and two haplogroups. Results indicate that these lineages are demographically independent populations of O. mimus and do not represent different species as evidenced by the Generalized Mixed Yule Coalescent method. The oceanographic processes have apparently allowed enough genetic flow along the Pacific coast yielding low but significant levels of genetic structure (FST = 0.16, p < 0.05) as seen in some fish populations. Keywords COI . Biogeography . Dispersion . Octopodidae
Introduction
Communicated by M. Vecchione Electronic supplementary material The online version of this article (https://doi.org/10.1007/s12526-020-01078-4) contains supplementary material, which is available to authorized users. * Ricardo Pliego-Cardenas [email protected] 1
División de Estudios Profesionales, Facultad de Ciencias, Universidad Nacional Autónoma de México, Av. Universidad 3000, Circuito Exterior S/N, Delegación Coyoacán, 04510 Ciudad de Mexico, Mexico
2
Laboratorio de Genética y Biología Molecular, Planta Experimental de Producción Acuícola, Universidad Autónoma Metropolitana Unidad Iztapalapa, Av. San Rafael Atlixco 186. Col. Vicentina, Del. Iztapalapa, 09340 Ciudad de Mexico, Mexico
3
Investigación de Recursos Bioacuáticos y su Ambiente, Instituto Nacional de Pesca, Letamendi 102 y La Ría, Guayaquil, Ecuador
4
Laboratorio de Pesquerías Artesanales, El Colegio de La Frontera Sur (CONACyT), Unidad Campeche, Mexico
There are six biogeographic provinces in the eastern Pacific: California, Cortez, Panamanian, Galapagos, Peru-Chilean, and Juan Fernández (Briggs and Bowen 2012). All these provinces are defined by high endemism rates in a wide range of marine biotas and by genetic barriers in species boundaries. In previous genetic studies, the assessment of
Data Loading...
